//===============================================================================
// Microsoft patterns & practices
// Mobile Client Software Factory - July 2006
//===============================================================================
// Copyright  Microsoft Corporation.  All rights reserved.
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY
// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE.
//===============================================================================
// The example companies, organizations, products, domain names,
// e-mail addresses, logos, people, places, and events depicted
// herein are fictitious.  No association with any real company,
// organization, product, domain name, email address, logo, person,
// places, or events is intended or should be inferred.
//===============================================================================

using System;
using System.Globalization;
using System.Reflection;

namespace Microsoft.Practices.Mobile.ObjectBuilder
{
	internal static class Guard
	{
		public static void ArgumentNotNull(object value, string argumentName)
		{
			if (value == null)
				throw new ArgumentNullException(argumentName);
		}

		public static void TypeIsAssignableFromType(Type assignee, Type providedType, Type classBeingBuilt)
		{
			if (!assignee.IsAssignableFrom(providedType))
				throw new IncompatibleTypesException(string.Format(CultureInfo.CurrentCulture,
					Properties.Resources.TypeNotCompatible, assignee, providedType, classBeingBuilt));
		}

		public static void ValidateMethodParameters(MethodBase methodInfo, object[] parameters, Type typeBeingBuilt)
		{
			ParameterInfo[] paramInfos = methodInfo.GetParameters();

			for (int i = 0; i < paramInfos.Length; i++)
				if( parameters[i] != null )
					Guard.TypeIsAssignableFromType(paramInfos[i].ParameterType, parameters[i].GetType(), typeBeingBuilt);
		}
	}
}
